Thank you for the response.
Question, is it even recomended or supported to use the build in RADIUS server in production?
I have been looking at some other tickets: https://support.gluu.org/authentication/11054/gluu-radius-only-processes-first-authentication-request/
In this ticket the RADIUS server stop processing requests after a while. I also have this additional problem. The service needs a manual restart.
I did solve the initial problem described in the ticket itself.
However if i reconfigure the authentication to use SuperGLUU instead, i recieve the notification but it immediately sends the reject response from the RADIUS server.